diff --git a/01-greeting/index.js b/01-greeting/index.js
index 8f551af..85600ec 100644
--- a/01-greeting/index.js
+++ b/01-greeting/index.js
@@ -1,4 +1,5 @@
 export function greet(name) {
   // implementar logica aqui
-  return "";
+
+  return `Hello ${name}` ;
 }
diff --git a/02-triangleArea/index.js b/02-triangleArea/index.js
index 7628fcd..71ecb21 100644
--- a/02-triangleArea/index.js
+++ b/02-triangleArea/index.js
@@ -1,3 +1,4 @@
 export function triangleArea(base, height) { 
   // your code here
+  return base * height / 2 ;
 } 
\ No newline at end of file
diff --git a/03-maxValue/index.js b/03-maxValue/index.js
index e433b31..a588023 100644
--- a/03-maxValue/index.js
+++ b/03-maxValue/index.js
@@ -1,4 +1,9 @@
 export function maxValue(values) {
   // implementar logica aqui
+  if (values.length == 0)
+  
+  return 0;
+
+  return Math.max(...values,);
   
 }
\ No newline at end of file
diff --git a/04-fibonacci/index.js b/04-fibonacci/index.js
index 37c64cc..be20017 100644
--- a/04-fibonacci/index.js
+++ b/04-fibonacci/index.js
@@ -1,4 +1,7 @@
 export function fibonacci(value) {
   // implementar logica aqui
-  
+    let phi = (1 + Math.sqrt(5))/2;
+    let asymp = Math.pow(phi, value) / Math.sqrt(5);
+
+    return Math.round(asymp);
 }
\ No newline at end of file
diff --git a/05-isPrime/index.js b/05-isPrime/index.js
index ec9c4ac..e61acdc 100644
--- a/05-isPrime/index.js
+++ b/05-isPrime/index.js
@@ -1,4 +1,9 @@
 export function isPrime(value) {
   // implementar logica aqui
+  if (value === 0 || value === 1) return false;
   
+  for (let i = 2; i <= Math.sqrt(value); i++) {
+      if (value % i === 0) return false;          
+    }
+    return  true;
 }
\ No newline at end of file
diff --git a/06-sum/index.js b/06-sum/index.js
index ebc2ee1..4d6b912 100644
--- a/06-sum/index.js
+++ b/06-sum/index.js
@@ -1,4 +1,4 @@
 export function sum(values) {
   // implementar logica aqui
-  
+  return values.reduce((total, values) => total + values, 0);
 }
\ No newline at end of file
diff --git a/07-sumEven/index.js b/07-sumEven/index.js
index bb1e095..3b23156 100644
--- a/07-sumEven/index.js
+++ b/07-sumEven/index.js
@@ -1,4 +1,4 @@
 export function sumEven(value) {
   // implementar logica aqui
-  
+  return value.reduce((acc,curr)=>acc + (curr % 2 == 0 ? curr : 0), 0);  
 }
\ No newline at end of file
diff --git a/08-isAnagram/index.js b/08-isAnagram/index.js
index 918308a..1c82f70 100644
--- a/08-isAnagram/index.js
+++ b/08-isAnagram/index.js
@@ -1,4 +1,6 @@
 export function isAnagram(word1, word2) {
   // implementar logica aqui
-  
+  var y = word1.toLowerCase().split("").sort().join(""),
+      z = word2.toLowerCase().split("").sort().join("");
+  return (z === y) ? true : false;
 }
\ No newline at end of file
diff --git a/09-mostRepeatedChar/index.js b/09-mostRepeatedChar/index.js
index b113ed8..f10b302 100644
--- a/09-mostRepeatedChar/index.js
+++ b/09-mostRepeatedChar/index.js
@@ -1,4 +1,8 @@
 export function mostUsedChar(text) {
     // implementar logica aqui
-    return ""
+    const charHolder = text.toLowerCase().split('').reduce((ac,a) => (ac[a] = ac[a] + 1 || 1, ac), {});
+
+    let max = Math.max(...Object.values(charHolder));
+
+    return Object.entries(charHolder).reduce((ac,[k,v]) =>v === max ? ac + k : ac, '');
 }
\ No newline at end of file
diff --git a/10-longestWords/index.js b/10-longestWords/index.js
index a98d2d8..ab58490 100644
--- a/10-longestWords/index.js
+++ b/10-longestWords/index.js
@@ -1,4 +1,13 @@
 export function longestWords(words) {
     // implementar logica aqui
     
+    return words.reduce((r, s, i) => {
+        if (!i || r[0].length < s.length) {
+            return [s];
+        }
+        if (r[0].length === s.length) {
+            r.push(s);
+        }
+        return r;
+    }, []);
 }
\ No newline at end of file